<title>Hybrid bidirectional optical backplane with multiple bus lines</title>

The architectural design and performance of bi-directional optical backplanes with multi-bus lines are presented and analyzed. Previously, we have reported a general purpose bi- directional optical backplane with single bus line. With the integration of vertical-cavity surface-emitting lasers and photodetector arrays, in this paper, we further propose and demonstrate an optical backplane with multi-bus lines. With the multi-bus line structure, the bandwidth of the bus system is greatly increased. The performance related issue, such as the power budget consideration, the misalignment, etc., are also discussed, and related experiments are presented.